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I-84 Paving (Multnomah Falls to Cascade Locks) and Toothrock Tunnel Repair

Design Phase

Region 1: Portland metro and Hood River County (Hood River, Multnomah)

​We are designing a project to repair the aging floor of the Toothrock Tunnel (which carries I-84 east near Bonneville Dam) and to repave the highway between Multnomah Falls and Cascade Locks. 



  • ​Design continues through 2021. 
  • Construction is expected to take place in 2022. 

Schedule is subject to change.



​The Toothrock Tunnel carries I-84 east near Bonneville Dam (just west of Cascade Locks). The floor of the tunnel and pavement on I-84 between Multnomah Falls and Cascade Locks is aging and rutting. Repairs are needed now to extend the life of the highway and smooth out the ride for travelers. 

We will also resurface several bridges on I-84 and repair a section of the I-84 east Exit 41 off-ramp toward Eagle Creek where the bridge surface has deteriorated. 

Sign up for email updates to stay in the loop on this project and other projects on I-84 and the Historic Columbia River Highway between Portland and Hood River.  ​


I-84 |

​Between Multnomah Falls and Cascade Locks

Cost and Funding

​Project cost: $22,443,550.00​


​Repairing the floor of the Toothrock Tunnel, repaving about 13 miles of I-84 in both directions, and repairing bridges will smooth out the ride for travelers, increase safety and increase the life of the highway.  

Additional Information

​​The Columbia River Gorge is one of Oregon’s seven wonders – home to the first highway in the Pacific Northwest, sweeping vistas and rich history. And for more than 100 years, it’s been an important corridor for freight movements, both in the water and on the road.

Over the next several years, we have many construction projects planned on Interstate 84 between Interstate 205 and Hood River, and on the Historic Columbia River Highway between Troutdale and Hood River. 

Each project brings benefits to residents, businesses and visitors by increasing safety, extending the lifespan of the highways or completing a gap in walking and biking infrastructure. 

View more information​ about upcoming work. 

Contacts & Media

Project Contact

Community Affairs Coordinator
Katelyn Jackson

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Sign up for the newsletter! Columbia River Gorge Construction: I-84 and U.S. 30 Historic Columbia River Highway

Last Updated

6/8/2021 2:28 PM

Project Number


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